Up-ported code to make tree item visible when programmatically

[wxWidgets.git] / src / gtk1 / region.cpp

diff --git a/src/gtk1/region.cpp b/src/gtk1/region.cpp
index ce742d343be2d29de26daceb351064f119397b0f..2c31667721a289500e07d11953029ee3461a2542 100644 (file)
--- a/src/gtk1/region.cpp
+++ b/src/gtk1/region.cpp
@@ -2,15 +2,24 @@
 // Name:        gtk/region.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Name:        gtk/region.cpp
 // Purpose:
 // Author:      Robert Roebling

+// Modified:    VZ at 05.10.00: use Unshare(), comparison fixed

 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

+// ============================================================================
+// declarations
+// ============================================================================
+

 #ifdef __GNUG__
 #ifdef __GNUG__

-#pragma implementation "region.h"
+    #pragma implementation "region.h"

 #endif
 
 #endif
 

+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+

 #include "wx/region.h"
 
 #include <gdk/gdk.h>
 #include "wx/region.h"
 
 #include <gdk/gdk.h>


@@ -25,15 +34,18 @@
 #define OLDCODE 0
 #endif
 
 #define OLDCODE 0
 #endif
 

-//-----------------------------------------------------------------------------
-// wxRegion
-//-----------------------------------------------------------------------------
+#include "wx/log.h"
+
+// ----------------------------------------------------------------------------
+// wxRegionRefData: private class containing the information about the region
+// ----------------------------------------------------------------------------

 
 

-class wxRegionRefData: public wxObjectRefData
+class wxRegionRefData : public wxObjectRefData

 {
 public:
     wxRegionRefData();
 {
 public:
     wxRegionRefData();

-    ~wxRegionRefData();
+    wxRegionRefData(const wxRegionRefData& refData);
+    virtual ~wxRegionRefData();

 
     GdkRegion  *m_region;
 #if OLDCODE
 
     GdkRegion  *m_region;
 #if OLDCODE


@@ -41,11 +53,51 @@ public:
 #endif
 };
 
 #endif
 };
 

+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
+#define M_REGIONDATA ((wxRegionRefData *)m_refData)
+#define M_REGIONDATA_OF(rgn) ((wxRegionRefData *)(rgn.m_refData))
+
+IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject);
+IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxRegionRefData
+// ----------------------------------------------------------------------------
+

 wxRegionRefData::wxRegionRefData()
 {
     m_region = (GdkRegion *) NULL;
 }
 
 wxRegionRefData::wxRegionRefData()
 {
     m_region = (GdkRegion *) NULL;
 }
 

+wxRegionRefData::wxRegionRefData(const wxRegionRefData& refData)
+{
+#ifdef __WXGTK20__
+    m_region = gdk_region_copy(refData.m_region);
+#else
+    m_region = gdk_region_new();
+    GdkRegion *regCopy = gdk_regions_union(m_region, refData.m_region);
+    gdk_region_destroy(m_region);
+    m_region = regCopy;
+#endif
+
+#if OLDCODE
+    wxNode *node = refData.m_rects.First();
+    while (node)
+    {
+        wxRect *r = (wxRect*)node->Data();
+        m_rects.Append( (wxObject*) new wxRect(*r) );
+        node = node->Next();
+    }
+#endif
+}
+

 wxRegionRefData::~wxRegionRefData()
 {
     if (m_region) gdk_region_destroy( m_region );
 wxRegionRefData::~wxRegionRefData()
 {
     if (m_region) gdk_region_destroy( m_region );


@@ -61,11 +113,15 @@ wxRegionRefData::~wxRegionRefData()
 #endif
 }
 
 #endif
 }
 

-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// wxRegion construction
+// ----------------------------------------------------------------------------

 
 #define M_REGIONDATA ((wxRegionRefData *)m_refData)
 
 
 #define M_REGIONDATA ((wxRegionRefData *)m_refData)
 

-IMPLEMENT_DYNAMIC_CLASS(wxRegion,wxGDIObject);
+wxRegion::wxRegion()
+{
+}

 
 wxRegion::wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
 {
 
 wxRegion::wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
 {


@@ -130,24 +186,42 @@ wxRegion::wxRegion( const wxRect& rect )
 #endif
 }
 
 #endif
 }
 

-wxRegion::wxRegion()
+wxRegion::~wxRegion()

 {
 }
 
 {
 }
 

-wxRegion::~wxRegion()
+bool wxRegion::operator==( const wxRegion& region )

 {
 {

+    // VZ: compare the regions themselves, not the pointers to ref data!
+    return gdk_region_equal(M_REGIONDATA->m_region,
+                            M_REGIONDATA_OF(region)->m_region);

 }
 
 }
 

-bool wxRegion::operator == ( const wxRegion& region )
+bool wxRegion::operator != ( const wxRegion& region )

 {
 {

-    return m_refData == region.m_refData;
+    return !(*this == region);

 }
 
 }
 

-bool wxRegion::operator != ( const wxRegion& region )
+void wxRegion::Unshare()

 {
 {

-    return m_refData != region.m_refData;
+    if ( !m_refData )
+    {
+        m_refData = new wxRegionRefData;
+        M_REGIONDATA->m_region = gdk_region_new();
+    }
+    else if ( m_refData->GetRefCount() > 1 )
+    {
+        wxRegionRefData *refData = new wxRegionRefData(*M_REGIONDATA);
+        UnRef();
+        m_refData = refData;
+    }
+    //else: we're not shared

 }
 
 }
 

+// ----------------------------------------------------------------------------
+// wxRegion operations
+// ----------------------------------------------------------------------------
+

 void wxRegion::Clear()
 {
     UnRef();
 void wxRegion::Clear()
 {
     UnRef();


@@ -174,6 +248,8 @@ bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
     }
     else
     {
     }
     else
     {

+        Unshare();
+

 #ifdef __WXGTK20__
         gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
 #else
 #ifdef __WXGTK20__
         gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
 #else


@@ -182,7 +258,7 @@ bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
         M_REGIONDATA->m_region = reg;
 #endif
     }
         M_REGIONDATA->m_region = reg;
 #endif
     }

-    
+

 #if OLDCODE
     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,width,height) );
 #endif
 #if OLDCODE
     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,width,height) );
 #endif


@@ -200,11 +276,7 @@ bool wxRegion::Union( const wxRegion& region )
     if (region.IsNull())
         return FALSE;
 
     if (region.IsNull())
         return FALSE;
 

-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
+    Unshare();

 
 #ifdef __WXGTK20__
     gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );
 
 #ifdef __WXGTK20__
     gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );


@@ -229,42 +301,25 @@ bool wxRegion::Union( const wxRegion& region )
 
 bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {
 
 bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {

-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
-    

     wxRegion reg( x, y, width, height );
     wxRegion reg( x, y, width, height );

-    Intersect( reg );
-    return TRUE;
+
+    return Intersect( reg );

 }
 
 bool wxRegion::Intersect( const wxRect& rect )
 {
 }
 
 bool wxRegion::Intersect( const wxRect& rect )
 {

-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
-    

     wxRegion reg( rect );
     wxRegion reg( rect );

-    Intersect( reg );
-    return TRUE;
+    return Intersect( reg );

 }
 
 }
 

-bool wxRegion::Intersect( const wxRegion& region )
+// this helper function just computes the region intersection without updating
+// the list of rectangles each region maintaints: this allows us to call it
+// from Intersect() itself without going into infinite recursion as we would
+// if we called Intersect() itself recursively
+bool wxRegion::IntersectRegionOnly(const wxRegion& region)

 {
 {

-    if (region.IsNull())
-        return FALSE;
+    Unshare();

 
 

-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-        return TRUE;
-    }
-    

 #ifdef __WXGTK20__
     gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
 #else
 #ifdef __WXGTK20__
     gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
 #else


@@ -272,33 +327,66 @@ bool wxRegion::Intersect( const wxRegion& region )
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
 #endif
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
 #endif

+

     return TRUE;
 }
 
     return TRUE;
 }
 

-bool wxRegion::Subtract( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+bool wxRegion::Intersect( const wxRegion& region )

 {
 {

+    if (region.IsNull())
+        return FALSE;
+

     if (!m_refData)
     {
         m_refData = new wxRegionRefData();
         M_REGIONDATA->m_region = gdk_region_new();
     if (!m_refData)
     {
         m_refData = new wxRegionRefData();
         M_REGIONDATA->m_region = gdk_region_new();

+        return TRUE;

     }
 
     }
 

-    wxRegion reg( x, y, width, height );
-    Subtract( reg );
+    if ( !IntersectRegionOnly(region) )
+    {
+        GetRectList()->Clear();
+
+        return FALSE;
+    }
+
+    // we need to update the rect list as well
+#if OLDCODE
+    wxList& list = *GetRectList();
+    wxNode *node = list.First();
+    while (node)
+    {
+        wxRect *r = (wxRect*)node->Data();
+
+        wxRegion regCopy = region;
+        if ( regCopy.IntersectRegionOnly(*r) )
+        {
+            // replace the node with the intersection
+            *r = regCopy.GetBox();
+        }
+        else
+        {
+            // TODO remove the rect from the list
+            r->width = 0;
+            r->height = 0;
+        }
+
+        node = node->Next();
+    }
+#endif

     return TRUE;
 }
 
     return TRUE;
 }
 

-bool wxRegion::Subtract( const wxRect& rect )
+bool wxRegion::Subtract( wxCoord x, wxCoord y, wxCoord width, wxCoord height )

 {
 {

-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
+    wxRegion reg( x, y, width, height );
+    return Subtract( reg );
+}

 
 

+bool wxRegion::Subtract( const wxRect& rect )
+{

     wxRegion reg( rect );
     wxRegion reg( rect );

-    Subtract( reg );
-    return TRUE;
+    return Subtract( reg );

 }
 
 bool wxRegion::Subtract( const wxRegion& region )
 }
 
 bool wxRegion::Subtract( const wxRegion& region )


@@ -312,6 +400,8 @@ bool wxRegion::Subtract( const wxRegion& region )
         M_REGIONDATA->m_region = gdk_region_new();
     }
 
         M_REGIONDATA->m_region = gdk_region_new();
     }
 

+    Unshare();
+

 #ifdef __WXGTK20__
     gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
 #else
 #ifdef __WXGTK20__
     gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
 #else


@@ -319,33 +409,20 @@ bool wxRegion::Subtract( const wxRegion& region )
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
 #endif
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
 #endif

+

     return TRUE;
 }
 
 bool wxRegion::Xor( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {
     return TRUE;
 }
 
 bool wxRegion::Xor( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {

-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
-

     wxRegion reg( x, y, width, height );
     wxRegion reg( x, y, width, height );

-    Xor( reg );
-    return TRUE;
+    return Xor( reg );

 }
 
 bool wxRegion::Xor( const wxRect& rect )
 {
 }
 
 bool wxRegion::Xor( const wxRect& rect )
 {

-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
-

     wxRegion reg( rect );
     wxRegion reg( rect );

-    Xor( reg );
-    return TRUE;
+    return Xor( reg );

 }
 
 bool wxRegion::Xor( const wxRegion& region )
 }
 
 bool wxRegion::Xor( const wxRegion& region )


@@ -358,6 +435,10 @@ bool wxRegion::Xor( const wxRegion& region )
         m_refData = new wxRegionRefData();
         M_REGIONDATA->m_region = gdk_region_new();
     }
         m_refData = new wxRegionRefData();
         M_REGIONDATA->m_region = gdk_region_new();
     }

+    else
+    {
+        Unshare();
+    }

 
 #ifdef __WXGTK20__
     gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );
 
 #ifdef __WXGTK20__
     gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );


@@ -380,29 +461,33 @@ bool wxRegion::Xor( const wxRegion& region )
     return TRUE;
 }
 
     return TRUE;
 }
 

+// ----------------------------------------------------------------------------
+// wxRegion tests
+// ----------------------------------------------------------------------------
+

 void wxRegion::GetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
 {
 void wxRegion::GetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
 {

-    x = 0;
-    y = 0;
-    w = -1;
-    h = -1;
-    if (!m_refData)
-        return;
-
-    GdkRectangle rect;
-    gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
-    x = rect.x;
-    y = rect.y;
-    w = rect.width;
-    h = rect.height;
+    if ( m_refData )
+    {
+        GdkRectangle rect;
+        gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
+        x = rect.x;
+        y = rect.y;
+        w = rect.width;
+        h = rect.height;
+    }
+    else
+    {
+        x = 0;
+        y = 0;
+        w = -1;
+        h = -1;
+    }

 }
 
 wxRect wxRegion::GetBox() const
 {
 }
 
 wxRect wxRegion::GetBox() const
 {

-    wxCoord x = 0;
-    wxCoord y = 0;
-    wxCoord w = -1;
-    wxCoord h = -1;
+    wxCoord x, y, w, h;

     GetBox( x, y, w, h );
     return wxRect( x, y, w, h );
 }
     GetBox( x, y, w, h );
     return wxRect( x, y, w, h );
 }


@@ -476,14 +561,12 @@ wxList *wxRegion::GetRectList() const
 #endif
 }
 
 #endif
 }
 

-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------

 // wxRegionIterator
 // wxRegionIterator

-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------

 
 #if OLDCODE
 
 
 #if OLDCODE
 

-IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
-

 wxRegionIterator::wxRegionIterator()
 {
     Reset();
 wxRegionIterator::wxRegionIterator()
 {
     Reset();


@@ -563,7 +646,7 @@ wxCoord wxRegionIterator::GetH() const
 struct _XBox {
     short x1, x2, y1, y2;
 };
 struct _XBox {
     short x1, x2, y1, y2;
 };

- 
+

 struct _XRegion {
     long   size , numRects;
     _XBox *rects, extents;
 struct _XRegion {
     long   size , numRects;
     _XBox *rects, extents;


@@ -617,8 +700,6 @@ void wxRIRefData::CreateRects( const wxRegion& region )
   }
 }
 
   }
 }
 

-IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
-

 wxRegionIterator::wxRegionIterator()
 {
     m_refData = new wxRIRefData();
 wxRegionIterator::wxRegionIterator()
 {
     m_refData = new wxRIRefData();


@@ -682,5 +763,14 @@ wxCoord wxRegionIterator::GetH() const
     return ((wxRIRefData*)m_refData)->m_rects[m_current].height;
 }
 
     return ((wxRIRefData*)m_refData)->m_rects[m_current].height;
 }
 

+wxRect wxRegionIterator::GetRect() const
+{
+    wxRect r;
+    if( HaveRects() )
+        r = ((wxRIRefData*)m_refData)->m_rects[m_current];
+
+    return r;
+}
+

 #endif
 
 #endif